A、2025
B、2023
C、2022
D、2021
Astute service providers realize that the continued support oflegacy X.25 and asynchronous network elements using separate operations network is cost(1). For example, the maintenance of multiple networks can require additional staff. Often, this staff must be trained on multiple vendor technologies, sometimes requiring parallel groups specializing in each(2). Hence, additional maintenance procedures must be maintained and administrative records are(3). The duplication oftransport facilities to carry(4)network traffic is an inefficient use of resources. And not surprisingly, more technologies installed in a central office mean the necessity for more physical space, and an increase in power connections and power consumption. Migration ofthese(5)network elements to IP-based DCns is alogical strategy.
-- _____
A.Thank you so much for your advice .
B.Er⋯What can I do for you ?
C.Do you think it's true ?
D.That's all right .
A、alchoholic flush
B、red-green color-blindness
C、taste blindness
D、slow dark adaptation
A、Selection
B、Organization
C、Interpretation
D、Management
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